dotnet/wcf

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This repo contains the client-oriented WCF libraries that enable applications built on .NET Core to communicate with WCF services.

Stars: 1.8k
Forks: 576
Open beginner issues: 3
Indexed issues: 322
Avg merge: 6d 9h
Merged PRs (30d): 2

Dominant language: C#
License: MIT
Last GitHub push: Sep 17, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

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322 open issues indexed

System.ServiceModel.NetNamedPipe high-concurrency connection attempts are less reliable on net8.0-windows than net48 Open

dotnet/wcf#5977 · 1 comment · 1 reaction · 2 assignees · Opened Sep 10, 2026
dotnet-svcutil should use `RollForward = LatestMajor` Open

Difficulty 3/5 1-2 days Newbie friendliness 58/100

dotnet/wcf#5972 · Opened Aug 18, 2026
DispatchMessageInspector on CallbackDispatchRuntime breaks all inbound duplex callbacks (IndexOutOfRangeException in ImmutableDispatchRuntime) Open

dotnet/wcf#5969 · 1 assignee · Opened Jul 30, 2026
Package 'System.Security.Cryptography.Xml' 10.0.0 has a known high severity vulnerability, https://github.com/advisories/GHSA-37gx-xxp4-5rgx Open

Difficulty 2/5 1-3 hours Newbie friendliness 62/100

dotnet/wcf#5960 · 1 comment · 6 reactions · Opened Jun 22, 2026
System.ServiceModel.Primitives V8.1.* (latest version) references System.Security.Cryptography.Xml V8.0.2 which has a known vulnerability Open

Difficulty 2/5 1-3 hours Newbie friendliness 70/100

dotnet/wcf#5957 · 1 comment · 5 reactions · Opened Jun 2, 2026
dotnet-svcutil can use default credentials by default Open

dotnet/wcf#5950 · 1 assignee · Opened May 21, 2026
System.ServiceModel.Security.6.0.0 NuGet only supports `net6.0` Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5942 · 1 comment · Opened May 8, 2026
Proxy and WCF Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

dotnet/wcf#5939 · 1 comment · Opened Apr 28, 2026
System.ServiceModel.Federation depends on deprecated Microsoft.IdentityModel.Protocols.WsTrust package Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

dotnet/wcf#5938 · 3 comments · Opened Apr 27, 2026
Error NU1901: Package 'System.Security.Cryptography.Xml' 10.0.0 has a known low severity vulnerability Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

dotnet/wcf#5935 · 5 comments · 28 reactions · Opened Apr 16, 2026
Support .NET 10 as runtime. Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

dotnet/wcf#5929 · 3 comments · Opened Apr 9, 2026
Code generated by dotnet-svcutil breaks when a type has a member called System. Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

dotnet/wcf#5910 · Opened Mar 1, 2026
dotnet-svcutil: Reduce FrameworkFork/System.Web.Services by using System.Web.Services.Description package Open

dotnet/wcf#5898 · 1 assignee · Opened Feb 6, 2026
dotnet-svcutil: Evaluate whether RemoveExtensibleDataObjectImpl is still needed Open

dotnet/wcf#5897 · 1 assignee · Opened Feb 6, 2026
dotnet-svcutil tool sometimes makes public types when specifying /internal Open

dotnet/wcf#5894 · 1 comment · 1 assignee · Opened Feb 3, 2026
HTTP based transports don't abort an in progress request if the reply has already started Open

dotnet/wcf#5885 · 1 reaction · 2 assignees · Opened Jan 21, 2026
RST/SCT/Renew message not send(function) when WCF Client [.NET 8.0] communicate to WCF Server [.Net Framework 4.8] Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

dotnet/wcf#5883 · 1 reaction · Opened Jan 8, 2026
Http wsdl file not generated in WCF Application service while configuring in IIS Manager in Windows Server 2022 DataCenter Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

dotnet/wcf#5872 · 2 comments · Opened Dec 12, 2025
VS2026 + .NET 10 broke SvcUtil System.ObjectModel / ObservableCollection Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

dotnet/wcf#5869 · Opened Nov 28, 2025
Since v10.0.652802 several types are not included Open

Difficulty 3/5 1-2 days Newbie friendliness 38/100

dotnet/wcf#5868 · 22 comments · 29 reactions · Opened Nov 20, 2025
dotnet-svcutil generates invalid IL code if the web service method has an optional parameter Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

dotnet/wcf#5862 · Opened Oct 28, 2025
Exception SFxCallbackRequestReplyInOrder1 in System.ServiceModel.Channels.ServiceChannel when using ConcurrencyMode.Multiple Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5861 · Opened Oct 28, 2025
.Net client generate DataContract cache overflow exception when return type is nullable ValueTuple Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

dotnet/wcf#5833 · 1 comment · Opened Sep 8, 2025
WCF Client Throws WebSocketException when the Service Abruptly Closes the Handshake Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

dotnet/wcf#5819 · Opened Aug 15, 2025
Tracking CoreWCF Issue 1643 - Linux WebSocket bug in Close method Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5818 · Opened Aug 15, 2025
Suboptimal ReaderWriterLockSlim usage in TypedHeaderManager Open

Difficulty 3/5 1-2 days Newbie friendliness 52/100

dotnet/wcf#5811 · 1 comment · Opened Aug 1, 2025
Primitives nuget library reports missing properties Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

dotnet/wcf#5808 · 1 comment · Opened Jul 11, 2025
ServiceChannel gets stuck in failed Open state when attempting to auto close Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

dotnet/wcf#5803 · 3 comments · 1 reaction · Opened Jun 30, 2025
The svcutil tool fails when referencing an IXmlSerializable type that uses the XmlSchemaProviderAttribute Open

Difficulty 3/5 1-2 days Newbie friendliness 48/100

dotnet/wcf#5792 · Opened Jun 6, 2025
Significantly worse performance calling endpoint from System.ServiceModel in net8 than framework version Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5771 · 1 reaction · Opened May 7, 2025
ReferencedTypeDoesNotMatch thrown on correct DataContract Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

dotnet/wcf#5769 · 3 comments · Opened Apr 25, 2025
dotnet-svcutil not generate XML serializer assembly Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5766 · Opened Apr 20, 2025
CoreWCF Integration - WCF Test Failures using SelfHostedCoreWCFService Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

dotnet/wcf#5765 · Opened Apr 17, 2025
MacOS - Certificate Generator Fails to Create Certificates Open

dotnet/wcf#5764 · 1 assignee · Opened Apr 1, 2025
SvcUtil does not generate code for imported XSDs Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5763 · Opened Mar 28, 2025
XmlSerializer don't load after first missing property Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

dotnet/wcf#5762 · 4 comments · Opened Mar 27, 2025
Empty proxy generated from dotnet-svcutil Open

tooling

Difficulty 4/5 3-5 days Newbie friendliness 38/100

dotnet/wcf#5755 · 1 comment · Opened Mar 10, 2025
No CancellationToken still? Open

triaged

dotnet/wcf#5743 · 4 comments · 5 reactions · 1 assignee · Opened Feb 13, 2025
Generate Sync only proxy code using dotnet-svcutil ? Open

tooling

dotnet/wcf#5736 · 1 assignee · Opened Jan 30, 2025
Update dotnet-svcutil.xmlserializer to Support .NET 9 Open

tooling

dotnet/wcf#5734 · 4 comments · 1 assignee · Opened Jan 29, 2025
AspNetCore 8 Web API using JwtBearer stops returning user context if you upgrade to System.ServiceModel.Federation 8.1.x Open

investigation needed triaged

dotnet/wcf#5732 · 3 comments · 2 reactions · 1 assignee · Opened Jan 24, 2025
WCF Client (.net8.0 Win form Exe) Call will Hung if Sync Method is Invoked before Invoking any Async Method Open

triaged

dotnet/wcf#5730 · 8 comments · 1 reaction · 1 assignee · Opened Jan 20, 2025
WebSocket custom SSL validation only works when using client certificates Open

feature request triaged

dotnet/wcf#5729 · 4 comments · 2 assignees · Opened Jan 17, 2025
Could not copy Microsoft.Common.CurrentVersion.targets Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

dotnet/wcf#5723 · 1 comment · Opened Jan 4, 2025
SecurityToken is not found by .NET Framework project after upgrade of System.ServiceModel.Primitives from 4.10.3 to 8.1.1 in netstandard2.0 project Open

triaged

dotnet/wcf#5722 · 2 comments · 1 reaction · 1 assignee · Opened Jan 3, 2025
Not able to add wcf web service to netstandard2.0 class library project Open

tooling

dotnet/wcf#5721 · 4 comments · 1 assignee · Opened Dec 20, 2024
Overloads of `Message.CreateMessage()` that take an `Xml(...)Reader` argument produce invalid body Open

triaged

dotnet/wcf#5717 · 3 comments · 1 reaction · 1 assignee · Opened Dec 18, 2024
Migrate off of EOL container images Open

triaged

dotnet/wcf#5701 · 5 comments · 1 assignee · Opened Nov 26, 2024
Null Return, when WCF Client [.Net8.0] communicate to WCF Server [.Net Framework 4.8] Open

triaged

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5699 · 5 comments · Opened Nov 26, 2024
Call WCF client generated from Visual Studio from different AssemblyLoadContext causes exception Open

triaged

Difficulty 4/5 3-5 days Newbie friendliness 35/100

dotnet/wcf#5688 · 2 comments · Opened Nov 14, 2024

dotnet/wcf

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